Magnitude 4.5 earthquake jolts Chiba Prefecture area Christian Fernsby ▼ | February 20, 2020 A magnitude 4.5 earthquake, which measured 4 on the shindo intensity scale, was detected at a depth of 30 kilometers in northeastern Chiba Prefecture tday at 12:53 p.m.Article continues below Topics: EARTHQUAKE There is currently no tsunami warning in effect. As a precaution, those near coastal areas are advised to move to higher ground. ■